Powder-gun.



D. B. BIRD.

POWDER'GUN. APPLICATION FILED MAY 11.1918.

Patented Apr. 22, N19.

2 SHEETS-SHEET l.

D B` BIRD.

POWDER GUN.. APPLICATION FILED MAY11.19|8.

Hmmm Apr. 22,1919.

2 SHEETS-SHEET 2.

DAVID B. BIRD, 0F CHICAGO, ILLINOIS.

Leonesa.

Specification of Letters Patent.

POWDERFGUN.

Iatented Apr. 22, 1919.

Application filed May 11, 1918. Serial No. 233,904.

To all whom z' may concern Be it known that I, DAVID B, BIRD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Powder-Guns, of which the following is a specification.

The invention has for an object to edect improvements in devices for ejecting disin-` I tachably connected with a container element so that after thegemptying ofthe container a new one may be put in place upon the ejector device, or enabling the ready refilling of the container, if preferred. A specific object of the invention is to give an improvement in the means for compressing and projecting air. into a container, whereby great strength will not be required to attain a maximum air pressure in the device, nor great speed in its operation, and liability of clogging minimized.

A further aim is to give an efficient construction and arrangement o-f the elements so thatra maximum agitation of pulverized material will be assured, with resultant eiiiciency and economy in action of the appliance.

In additionto seeking to cheapen and simplify such devices, ywhile retaining a maximum `of eiiiciency, other objects, advantages and features of invention reside in the construction, arrangement and combination of parts as hereinafter described, and shown in the drawings, wherein,

' Figure 1 `is a longitudinal sectional view ofone embodiment of my invention,

i Fig.2 isa similar view of an additional form thereof, Y

fLFig. 3 illustrates a further modification.

There `is illustrated in Fig.` 1 -a disinfectant spraying device comprising a hollow spherical element 10, ordinarily formed of rubber, and having at opposite sides coaxial inte ralV nipples 11 and 121.y Upon the first of these a metal sleeve 13 is engaged, haw

ing a closure cap or plug 14 therein provided with a broadened operating head 15 having knurle'd edges, and provided with a hang up ring 16 ina convenient situation to engage over a nail or hook, to suspend the device when not in use. Inserted into the plug 14, there is a tube 17, extending diametrically across the bulb 10, and through the opposite nipple12, to a short distance outwardly thereof, at which end the tube 1s exteriorly threaded and has engaged thereon a nozzle 18, provided with an inwardly projecting iange 19 engaging snugly around the'nipple 12 for rotation thereon when the nozzle 18 is beingl screwed into position. Hthin the 'bulb 10 the tube is provided with rings 2O revoluble upon the tube, between which one or more connecting rods 21 are extended, and upon these rings there is mounted a helical spring 22 attached to the respective rings by its opposite ends, the spring being of a length and being bent to lie in an arc closely adjacent or against the inner wall of the bulb 10, which spring may be used as an agitator and pulverizer. The tube 17 is formed with large ports 23 intermediately of its length,

through which air and dust may pass outwardly through the nozzle 18 when the bulb 10 is compressed. Immediately outward of these ports toward the nipple 11, the tube is closed by means of a suitable plug 21, and outwardly of the plug in the same direction a port 25 is formed in the tube adapted to permit the passageof material therethrough when introduced through the adjacent end of the tube after removal of the plug 1-1.

In the use of this form of the device, it maybe filled by removing the plug 111 and pourin the powder into the `open end of the tube 1 the powder passing` through the port 25 and into the bulb 10. It is preferably flled to a point on a level with the side of the ports 23 next the nozzle, when the device is held in a position with the nozzle pointed vertically downward. The proper amount of powder being introduced and the cap replaced, by giving the bulbV a rotary motion, the inertia of the spring 22 will cause it to rotate upon the tube 17, agi'- tating the powder in the bulb and creating a dense dust therewithin. During or after such rotary movement of the' bulb, it may be squeezed,` thus causing a rush of air carrying the dust with it, through the ports 23 and.

out through the nozzle 1S. This operation "may be repeated as often as desired.

In Fie. 2 there is shown a modified form I l e u I l of the device 1n Which the nozzle 1S 1s provided with a tubular inner termination 17 closed at its inner end, and stopping' tightly upon the nozzle and preventing relative movement of the latter Within the nipple. The tubular portion 17 of the nozzle elementis portedas dotted at 2S, and slid able upon this part of the nozzle there is a sleeve 29, stopping short of the inner wall of the bulb adjacent the nozzle mouth a suitable distance for the functions described later, and having attached thereto the ends of band springs 30, bent into circular form and as nearly concentric with the bulb 10 as possible, and spaced a short distance inwardly thereof, as shown, small springs 31 being utilized to hold the sleeve at its inner position.

Tn the use of this last described form of the device, a suitable amount of powder having been introduced, the bulb may be given a reciprocatory motion upon the axis of the nozzle, and on account of the loose mounting of the sleeve 29 upon the tubular portion 17, the springs 30 Will thereby be given a relative reciprocating movement Within the bulb serving to efficiently agitate the material therein. The port 28 is normally spaced such a distance Within the tube 29 that it Will not be uncovered except When the sleeve 29 `is at the outer limit of its movement toward the mouth of the nozzle. By grasping the bulb 10 lightly in the hand, and rotating it alternately in opposite directions upon the axis of the nozzle, Without abrupt and rapid movement, the agitator 30 Will,

by its inertia be caused to rotate relatively Within the bulb, striking the particles of matter therein, and assisting further inthe process of agitation. After agitation of the powder in this device, pressure upon the sides of the bulb 10 will force the sleeve 29 outwardly after compressing the air Within the device. This pressure is to be exerted so as to bear upon the oppositeside of one of the springs 30, which Will cause them t0 assume an elongated oval form, either moving the sleeve 29 outwardly upon the tubular portion' 17 sufficiently to uncover the port 28, or insuring' the maintenance of the sleeve 29 in open position.

In Fig. 3 there is illustrated a further Vform of device, in which the hollow sphericalv element 10l1 may be formed of metal or rubber or corresponding material as found desirable and compression' of air within the device is attained by means of a diaphragm 31 mounted in the outer enlarged or iared end of a rigid bell 32, the diameter of` Which is suflicient to give the desired capacity to the device, and also to serve as a base, upon which the device may be set up When desired. The diaphragm. 31 may be formed of any material suitable for the purpose, rubber having been used therein, and attached to lthe center thereof there is a reciprocating rod 33 havinga ported'valve 34 upon its inner end reciproca'ble in a tube 35 mounted diametrically in the bulb 10a. The tube 35 is secured into the bell 32, andthe .latter is secured upon the bulb 10a in a suitable manner. The tube 35 is projected through the bulb opposite the bell, and has mounted thereon a nozzle 18a, similar tothe nozzle'18 before described. The tube 35 is provided with a plurality of ports 36 therein, located adjacent the middle of the bulb 10a, the valve being of a length to 'cover these ports when in neutral position, and provided with ports 3t"on its sides normally spaced toward the diaphragm from the ports 36.

Thevalve is formed with a passage leadf ing from the ports 34 through the outer end of the valve. A port 37 is formed in the tube 35 a distance back ofthe valve toward the diaphragm when in initial position, and means is provided at 38`on the bell in the form of a portedcap having a cap and ball valve screwed into a tube39,` for admitting air tothe'bell When a partial vacuum is created therein. An agitator 22 including a mounting 20 may be mounted uponA the tube 35, correspondingy to the spring 22 and mounting 20 before mentioned. This agi tator may be caused torotate -Within the bulb by giving the appliance a rapid-orbital movement on an axis parallel to that of the nozzle, or by rotating it rapidly in first .one direction and then the other,'on the axis of the nozzle. Disinfectant may be introduced into the bulb 10a by unscrevving the cap of the valve 38, and removing'the valve parts, leaving a clear 4passage Way into the bell 32. Thespray-device may be turned to a vertical position, allowing the disinfectant toV pass into the tube 35, and throughthe port 37 into the interior of the bulb"10.

'In this form y'of the device, pressureupon the rod-33 Will bear. thediaphragm 31. inwardly, compressing airwithin. the bell and causing it to pass inwardly throughl the-port 37 With a forcible movement serving tofagitate the material Withinthe bulb,- andafter the air has been considerably compressed, the valve port 34 Will register With the port 36 permittingan abrupt outrush of airfrcm the bulb through the valve and tube .and nozzle, asrfwll; be readily understand.'V In this manner, the objection to a great many appliances of this kind that sufficient pressure cannot be developed to project disinfectant material a desired distance, is obviated, while at the same time giving the device a nozzle of large capacity without requiring excessively large air compressing means. In prior devices where a large nozzle has been used, the air often escapes therethrough before it has been possible to compress it to the desired extent, on account of the inability of the operator to work the compressing means with sufficient rapidity to insure the action desired.V With my device, a slow compression of the air will nevertheless result in a powerful and rapid flow of the air and disinfectant through the nozzle, so that venting through the ports 36 will occur when one-third or one-half of the maximum pressure is developed, or other ratio, as found desirable.

The springQQ and its counterparts in the various forms of the device will rub caked or lump material against the side .of the spherical element, quickly reducing the material to a fine powder, ordinarily.

The arrangement of the device so that the material ejected vwill lie below the outlet opening to the nozzle prevents the contents from piling over the orifice.

It will be noted that by the connection between the nipples of the ball containers, when the ball is compressed, the neck portions will be expanded within the ianges of the nozzle and closure cap, forming an effective seal.

lVhat is claimed is:

l. In a powder gun or the like, a hollow resilient collapsible container, a tube thereacross ported centrally within the hollow member andaprojected therefrom, and a collapsible resilient agitator revoluble on the tube, whereby the container and agitator may be grasped and lied.

2. In a devi-ce of t e character described, a container circular in cross section, a concentric ported outlet tube therein and a helical spring arranged on a curve concentric with the container, and close to the inner surface thereof, and revolubly mounted on the tube.

3. In a device of the character described, a container circular in cross section, a concentric ported outlet tube therein and a resilient agitator arranged on a curve concentric with the container, and close to the inner surface thereof adapted to rub against the side of the container, and revolubly mounted on the tube.

In testimony whereof I have affixed my signature in presence of two witnesses.

DAVID B. BIRD. Witnesses E. E. FREDRICKSON, J. P. GORNEY.

Copies of this patent may he obtained for ve cents each` by addressing the Commissioner of Patents, Washington,-D. C. 

